2. Geoff planted dahlias in his garden. Dahlias have bulbs that divide and reproduce underground. In the first year, Geoff’s garden produced 6 bulbs. In the second year, it produced 12 bulbs, and in the third year, it produced 24 bulbs. If this pattern continues, how many bulbs should Geoff expect in the eighth year? (1 point)
48 bulbs
384 bulbs
768 bulbs
1,536 bulbs
3. What are the first four terms of the sequence represented by the expression n(n – 1) – 5? (1 point)
–7, –5, –3, 1
–5, –10, –15, –20
0, 2, 6, 12
–5, –3, 1, 7
6. Given the function rule f(x) = x² – 5x + 1, what is the output of f(–3)? (1 point)
7
–5
25
5
7. Suppose you earn $10 each hour you babysit. Which function describes the relationship between your total earnings E and the number of hours you babysit, h? (1 point)
E(h) = 10h
E(h) = h + 10
E(h) = h – 10
h = 10E
Melanie charges $4.50 per hour when she washes cars, plus $5.00 for supplies. Which function rule represents the amount y Melanie charges to wash cars for x hours? (1 point)
y = 0.50x
y = 4.50x + 5.00
y = 5.00x + 4.50
y = 9.50x
14. The sale price of apples at a local grocery store is $1.35 for the first pound and $1.10 for each additional pound. Which function rule shows how the cost of apples, y, depends on the number of pounds, x? (1 point)
y = 1.10(x – 1) + 1.35
y = 1.10x + 1.35
y = 1.35x + 1.10
y = (1.10 + 1.35)x